Fill the grid with the numbers 1 through 9. In rows, columns and 3x3-boxes no number can be repeated. Additionaly place areas of the size 3x3 in the grid. It is not allowed that these areas overlap. Each of these areas contains at least one star. In the middle cell of such area can't be a star. Moreover each star is part of exactly one of these areas. In these areas also no number can be repeated.

The diagram contains small gardens. This are rectangular green areas separated by hedges. Every garden consist of the number of squares that the given numbers show. Every garden contains exactly one number. The small gardens may only touch each other at the vertexes. Each 2x2 square must have at least one garden square.

Locate the position of a 20-ship fleet in the grid. The shapes of the ships are shown to the right of the grid. There is two 4x1 battleship, four 3x1 cruisers, six 2x1 destroyers and 8 1x1 submarines. But in the grid is only a subset of this fleet. The numbers beside the grid indicate the number of cells occupied by ships in each row, while the numbers below the grid indicate the number of occupied cells in each column. Ships may touch the edge of the board, but cannot touch each other, not even diagonally. One cell is known to be water. Some cells are known to be ship parts.

Fill in the grid so that every row, every column and 3x3 box contains the digits 1 through 7 and two ship parts. So there are 18 ship parts for total. The ships are destroyer (2 unit ships) and submarines (1 unit ships). Ships cannot be adjazent to each other, not even diagonally. The numbers around the grid tell you how many ships you can see in this line.

Locate the position of the fleet in the grid. The shapes of the ships are shown to the right of the grid. The numbers in the grid indicate the number of cells occupied by ships in adjazent cells, including diagonally. Ships may touch the edge of the board, but can't touch each other, even not diagonally. Ships do not overlap the numbered squares.

In every row and column is exactly one circle, one square and one triangle. Locate the position of these symbols. The numbers in the grid indicate the number of cells occupied by symbols in adjazent cells, including diagonally. Symbols are not on the numbered squares.

Locate the position of a 10-ship fleet in the grid. The shapes of the ships are shown to the right of the grid. There is one 4x1 battleship, two 3x1 cruisers, three 2x1 destroyers and 4 1x1 submarines. The numbers beside the grid indicate the number of cells occupied by ships in each row, while the numbers below the grid indicate the number of occupied cells in each column. Ships may touch the edge of the board, but cannot touch each other, not even diagonally. Additional each cell has a number from 1 to 9. Place the digits so that each digit appears exactly once in each of the rows, columns and the nine outlined 3x3 regions. Cells with ship parts can only contain even numbers.

Locate the given fleet in the grid. The numbers beside the grid indicate the number of cells occupied by ships in each row, while the numbers below the grid indicate the number of occupied cells in each column. Ships may touch the edge of the board, but cannot touch each other, not even diagonally.